William n



(No Model.)

W. N. WE'EDEN.

METHOD OF MAKING ARBORS FOR CLOCKS AND WATCHES. No. 387,548.

Patented Aug. 7, .1888.

UNITED STATES FATENT Fries.

WILLIAM N. \VEEDEN, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNCR .TO THE WEEDEN MANUFACTURING COMPANY, OF SAME PLACE.

METHOD OF MAKING ARBORS FOR CLOCKS AND WATCHES.

SPECIFICATION forming part of Letters Patent No. 387,548, dated August 7, 1888.

Application filed August 18, 1887. Serial No. 247.397. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM N. WEEDEN, of New Bedford, in the county of Bristol,and in the State of Massachusetts, have invented certain new and useful Improvements in Method of and Means for Constructing Arbors for Clocks, Watches, &c.; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which Figure 1 is a perspective view of the core of my arbor. Fig. 2 is a like view of the blank prepared for forming the body of the arbor. Fig. 3 is a perspective view of said blank after having passed through the preliminary dies. Fig. 4 is a like view of the core and bodyblank when combined for the action of the closing-dies. Fig. 5 is a perspective view of said parts after the action of the closing-dies. Fig. 6 is a like view of the same after having passed through the drawing-dies, and Fig. 7 is a perspective view of the completed arbor after having apinion secured in place thereon.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to enable arbors for watches, clocks, 820., to be more easily and cheaply constructed than has heretofore been practicable;and to this end said invention consists in the method employed in manufacturing arbors by forming a core or center from a straight rod of metal and forming thereon a body by bending aplate of sheet metal around and causing it to embrace said core, substantially as and for the purpose hereinafter specified.

In the carrying of my invention into practice I construct my arbor from a central part or core, A, and an external part or body, B. Said core is made by cutting from steel wire having a diameter suitable for the pivots of the arbor a piece which has the required length and then rounding and smoothing its ends by any suitable means, preferably by the operation commonly known as tumbling.

For the body B, I take a rectangular piece of sheet metal which has a predetermined thickness 3. length equal to the distance between the movement-plate (if intended for use in a watch or clock) and a width equal to the circumferential length of the core A, and by means of suitable dies give to said blank the U shape seen in Fig. 3. Said core is now placed in position within said body-blank, as shown in Fig. 4., and by the action of dies the latter is closed down upon and caused to embrace the former, as seen in Fig. 5. The body Bis next passed through a drawingdie, which by its action closes the metal firmly upon the core A, gives to said body the exact diameter required, and leaves its surface in a highlypolished state. The arbor thus constructed is complete, the projecting ends of its core forming pivots, and the ends of its body bearing shoulders, and is adapted to receive a pinion, as seen in Fig. 7, or to be used in any manner or for any purpose for which ordinary arbors are employed. For most purposes said shoulders will be sufficiently accurate as left by the dies; but, if necessary, they may be dressed OH in a lathe at a trifling cost.

While my arbor is in all respects equal to those made from a solid piece of metal, it can be manufactured for a fraction of the cost of the latter.

Having thus described my invention, what I claim is- The method employed in manufacturing arbors, which consists in forming a core or 'center from a straight rod of metal, then forming thereon a body by bending a plate of sheet metal around the core, and, lastly, compressing the body closely upon said core by the action of a drawing-die, substantially as and for the purpose shown.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of August, A. D. 1887.

WILLIAM N. WEEDEN.

Witnesses:

OHAs. E. BARNEY, E. S. BROWN. 

